Issue 51, 2019, Issue in Progress
From the journal:

RSC Advances

Structure, optical simulation and thermal stability of the HfB2-based high-temperature solar selective absorbing coatings

Xiao-Li Qiu,ab   Xiang-Hu Gao,*a   Cheng-Yu He,a   Bao-Hui Chenc  and  Gang Liu ORCID logo *ab  

* Corresponding authors

a Research and Development Center for Eco-Chemistry and Eco-Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
E-mail: gangliu@licp.cas.cn, gaoxh@licp.cas.cn

b Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

c State Key Laboratory of Disaster Prevention & Reduction for Power Grid Transmission and Distribution Equipment, Changsha 410007, China

Abstract

Transition metal borides are a kind of potential materials for high-temperature solar thermal applications. In this work, a novel SS/HfB2/Al2O3 tandem absorber was prepared, which exhibited high solar spectrum selectivity (α/ε) of 0.920/0.109. The optical constants of the coating were obtained using spectroscopic ellipsometry, and the dispersion model of the HfB2 layer was modeled with the Tauc–Lorentz dispersion formula. In addition, the reflectance spectrum simulated by the CODE software corroborated well with the experimental results. The thermal stability test indicated that the HfB2/Al2O3 solar absorber coating was thermally stable in vacuum at 600 °C for 2 h. When extending the annealing time to 100 h, the coating could maintain high spectral selectivity after aging at 500 °C irrespective of whether in air or vacuum. All these results indicate that the coating has good solar selectivity and is a promising candidate for high-temperature solar thermal applications.

Graphical abstract: Structure, optical simulation and thermal stability of the HfB2-based high-temperature solar selective absorbing coatings

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C9RA05014K
Article type
Paper
Submitted
03 Jul 2019
Accepted
25 Aug 2019
First published
19 Sep 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 29726-29733

Permissions

Request permissions

Structure, optical simulation and thermal stability of the HfB2-based high-temperature solar selective absorbing coatings

X. Qiu, X. Gao, C. He, B. Chen and G. Liu, RSC Adv., 2019, 9, 29726 DOI: 10.1039/C9RA05014K

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements